This is a pilot study in patients with previously untreated inflammatory breast cancer (IBC) or locally advanced breast cancer (LABC) to evaluate angiogenesis parameters after treatment with rhuMAb VEGF - recombinant humanized monoclonal antibody vascular endothelial growth factor (bevacizumab). The challenge for new molecular-targeted anti-angiogenesis therapy is to devise appropriate and reliable markers to monitor efficacy. This may be achieved directly by evaluating changes in angiogenesis parameters in tumor samples. The use of less invasive surrogate markers to assess the efficacy of anti-angiogenic therapy is preferable. This may include functional changes in tumor vasculature assessed using non-invasive methods such as magnetic resonance imaging (MRI) or determination of changes in circulating soluble markers of angiogenesis.